Answer:
the answer is < 98
Explanation:
means first the sum of every degree of triangle is must be <180 so at the angle of A is straight line so it measure 180° - 143° =37°
So the formula form of 61°+37°+x =180°
x+61°+37°-37°=180°-37°...subtract by 37°
x+61°=143°...simplifying
x+61°-61°=143°-61°.....subtract by 61°
x=82°......simplifying